Abstract
In this chapter, we extend the ideas of the model reference adaptive control (MRAC), developed for integer-order plants with integer-order adaptive laws, to the case of integer-order plants but with fractional-order adaptive laws. Two cases are analyzed in detail; the direct MRAC (DMRAC) and the combined MRAC (CMRAC). In both cases, boundedness of all the signals in the resultant adaptive scheme is theoretically proved and a discussion on the error, and parameter convergence is provided in each case. The study is performed for scalar first-order time-invariant plants, since extensions to the vector case are currently under investigation.
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Acknowledgements
The results reported in this chapter have been financed by CONICYT- Chile, under the Basal Financing Program FB0809 “Advanced Mining Technology Center”, FONDECYT Project 1150488, “Fractional Error Models in Adaptive Control and Applications”, and FONDECYT 3150007, “Postdoctoral Program 2015”.
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Duarte-Mermoud, M.A., Aguila-Camacho, N., Gallegos, J.A., Travieso-Torres, J.C. (2018). Fractional-Order Model Reference Adaptive Controllers for First-Order Integer Plants. In: Clempner, J., Yu, W. (eds) New Perspectives and Applications of Modern Control Theory. Springer, Cham. https://doi.org/10.1007/978-3-319-62464-8_6
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DOI: https://doi.org/10.1007/978-3-319-62464-8_6
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